Somewhere in Dad's archive is/was (can't find it at the moment but as it was on AditNow it existed) a slide of a rather well-timbered and dry-looking Crankey Level which rather implies BSC de-watered to below all four wheels although that surprises me slightly so I do wonder if Top Level and Crankey Level names were transposed at some time. I also wonder if the 'horse track' was a continuation of Fawside's Horse Level?
From what I remember Post Office shaft wasn't entered too many times and I can't recall a mention of those rather intriguing steps down to the third wheel, mind you I was a dissolute student type at the time.
Jim










